Conveying apparatus



Patented Dec. 9, 1924.

UNITED STATES PATENT OFFICE.

ALBERT H. BRUNNER, OF OAK PARK, ILLINOIS, ASSIGNOR IO RAYMOND BROS. EN-GINEERING C0., OF CHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

CONVEYING APPARATUS.

Application led June 1,

To all whom it ma concern.'

Be it known that ,IAL-BERT H. BRQNNER, a citizen of the United States,residing at Oak Park, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Conveying Apparatus, ofwhich the following is a specification.

My invention relates to conveying apparatus of the screw conveyor typewhich 1s composed of a plurality of sections, the material conveyedbeing delivered by one section to the next; and the primary object ofthe invention is to provide an arrangement whereby the screw 1n onesection 1s driven from the screw of an adjacent section, and whereby oneof said sections, as a whole, may be adjusted angularly with respect tothe other sectionlw'ithout dlsturbance of or change in the interposedtransmitting mechanism. I

The invention consists of the new and 1mproved constructions,arrangements and devices to be hereinafter described and clalmed forcarrying out the above 'stated objects and such other incidental objectsas will be referred to in the following description of the invention.

The accompanying drawing shows the invention in a preferred embodiment.

In the drawing- Fig. 1 is a fragmentary vertical Sectional view throughadjoining conveyor sections, and

Fig. 2 is a sectional plan view on line 2-2 of Fig. 1.

Referring to the drawing, designates a conveyor casing composedpreferably of any number of anged castings suitably connected together.In the drawing I have shown two such castings 11 and 12, which areprovided with flanges 13 and 14 secured together by bolts 15. Within thecasin 10 is arranged a screw conveyor 16 on a s aft 17 which extendsthrough the end closure plate 18 at the right hand end of the casing andis provided with a bevel gear 19 keyed to the shaft and held between athrust bearing 20 and a collar 21 secured to shaft 17 by pin 22. Abushing 23 is arranged in the end closure 18 to provide a bearing forthe conveyor shaft 17. The end casting 11 of the conveyor casing 10 isformed at its outer end with a depending neck portion 24 which forms ineifect a. dlscharge chute for the` 1923. Serial No. 642,786.

material brought to this end of the casing by the conveyor screw 16. Theneck portion which extends through the closure plate 29 at the left handend of the casing and is rovided with a bevel gear 30 keyed to said saft and held between a boss 31 on the closure plate and a collar 32secured to the end of the shaft by pin 33. The material discharged fromthe .upper casing 10 enters the lower casing, passing through the neckportions 24, 25 of said casing and is picked up by conveyor 27 and movedthrough the lower casing to the right. The neck portions 24, 25 areformed with ianges 34, 35 preferably shouldered at 36 in order to oenterthem one with respect to the other and one, or preferably both, of theseanges are formed with arcuate slots 37, 38 to receive bolts 39 wherebthe conveyor casings may be secured toget er with capacity for angularadjustment. The anges 34, are recessed at 40, 41 to receive a two-partrecessed bushing 42, 43 on which turns a gear element 44 havin two setsof beveled gear teeth 45, 46 mes ed with the gear wheels 19 and 30,respectively, on the shafts of the upper and lower conveyor screws.

The gear ratio is preferably such that the lower conveyor 27 is drivenat a somewhat higher speed than the upper conveyor to compensate forslippage of the material.

handled. This material may be of any sort commonly moved by screwconveyor, the apparatus being deslgned particularly for thetransportation of pulverized coal.

The screw conveyors may be of any suitable construction. The shaft 28 ofthe conveyor is. preferably for-med with a circular shoulder 47. Theshaft has a bearing in aV bushing 48 within the boss 31 of the closureplate 29 and a dust ring 49 is arranged in a recess in the inner side ofthe closure plate. The shoulder 47 bears against the dust ring thethrust of the conveyor being in this direction.

Operation: By loosening the bolts 39 the lower conveyor may be turned toany angular position with respect to the upper conveyor within thelimits permitted by the length of the arcuate slots v37, 38 in the so toturn on an axis at right angles to the' axes of the aforesaid gears andmeshed es 34, and this adjustment involves isturbance of or change inthe mechanism for transmitting motion from the upper conveylor to thelower conveyor, or vice versa, as t e case may be. The transmlttinggears are self adjusting to any change in angular relationship betweenthe sectlons of the conveyor. The material conveyed from left to rightthroulgh the upper casing 10 falls down thrcug the passageway pro.-vided by the neck portions 24, 25 of the u per and lower casing into thelower casln wliere it is picked up. by conveyor'27 an carried forwardlythrough the lower casln preferably as stated, at a triie higher ra ofspeed. It will be understood that the il'an conveyin apparatus of myinvention may consist o more than two. conveyor sections ifcircumstances require it. 1

l claim:' l. In conveying apparatus, the bombination of' communicatingconveymg casings, means for-holding said casings 1n cooperativerelationship with capacity for angular adjustment of one casing withrespect to the other, conveyor screws 1n saidl casings,

Ucasings, and a power transmitting'rmechanism interposed between saidscrews coinprising gear wheels on the shafts of'said conveyer screws,and a gear' wheelarranged therewith.

2. 1n conve ing apparatus, the combina-- tion of tubu ar, elbow shapedconveyin which communicate -with eac other through their elbow portionsmeans for pivotally connecting said casingswith capacity for angular adustment of one casing withv respect tol t e other, conveyor screws insaid casings, and intermeshing gears interposed between -said conveyorscrews for im artin motion from one screw to the ot er w ich' are arraned to rotate about the 'axis of said ivota connection so as to be selfadjusting for diflferent angular positions of the casings.

tion of communicatm 3. In conveying apparatus, the combinaconveyingcasmgs, means -for holding sai 'casings in cooperative relationship withcapacity for angular adjustmentA of one casing with respect tol theother, conveyor screws in said casings,

.casl

gear wheels on the shafts of said conveyor screws, and a transmittinggear element meshed with the aforesaid gear wheels which turns on anaxis coincident with the axis of angular adjustment as between said 4. nconveying apparatus, the combination of communicatmg conveying casings,means for holding said casings in cooperative relationship with capacityfor angular adjustment of one casing with respect to the other, conveyorscrews in said casings,

neck portions, means beveled gears on ltheshafls of." 1said `conveyorscrews, .and a Atransmitting, gear element havin two sets of beveled earteeth meshed wit the aforesaid' beve ed gears,

respectively, which transmitting gear ele-v the other, conveyor screwsin said casings,

gear wheels on the conveyor screws, and a gear meshed with the aforesaidgears and formedfto impart motion from one screw to the other at adifferent speed andarranged` to permitself adjustment for differentangular positions of the casings.

6. Inconveying apparatus, the combination of conveyor casin havingaligned or fastening said neck rtions together, conveying screws in saicasings, respectivel provided with ear wheels, and a gear e ementsurrounding the neck portions osaid casing and .meshed with said gearwheels.

7. 'In conveying apparatus, the combination of conveyor casingshavingaligned neck portions, means or fastening said neck portions together,conveyi screws insai casings respectivel provi ed with beveled gears,and a gear e ement surrounding the neck portion of said casings andprovided with two sets of beveled gear teeth to mesh with the beveledgears on said conveyinlgn screws', respective y.

j 8.- conveying apparatus, the combination of conveyor casings havingaligned neck portions, means forfastening said neck portions togetheradjustably to permit change in angular position of one casing withrespect to the other, conveyin screws in said casings, respectivelprovided with gear .wheels and a gear e ement surrounding the necportions of said casings and meshed with said gear wheels.

9. In conveying apparatus, the combination of conveyor Icasings havingAaligned anged neck portions, bolts for fastening said flanges together,one of said -langes being slotted for said bolts to permit change inangular position as between said casings,

conveying screws in said casings, respec-4 tively, provided with gearwheels, and a gear element surrounding the neck portions llt conveyingscrewsA in said casings, respectively, provided with gear wheels, and agear element surrounding the neck portions of said casings and meshingwith said gear wheels.

11. In conveying apparatus, the combination of conveyor casings havingaligned neck portions, means for fastening said neck portions togetheradjustably to permit change in angular position of one casing withrespect to the other, conveying screws in said casings, respectively,provided with gear wheels, a gear element surrounding the neck portionsof said casings and meshed with said gear wheels, and a bushing surrounding the neck portions ot said casings to provide a bearing for saidgear clement.

12. In conveying apparatus, the combination of conveyor casings havingaligned neck portions, means for fastening said neck portions togetheradjustably to permit change in angular positionof one casing withrespect to the other, conveying screws in said casings, respectively,provided with gear wheels, a gear element surrounding the neck portionsof said casings and meshed with said gear wheels, and a two-part bushingsurrounding the neck portions of said casings and formed with flanges toprovide a recessed bearing for said gear element.

13. In conveying apparatus, the combina-4 tion of a casing one end ofwhich is formed in the bottom with a discharge opening, a casing belowthe rst named casing, one end of which is formed in the top with areceiving opening arranged in alignment with the discharge opening ofthe upper casing, conveying screws in said casing, gear Wheels on theshafts of said conveying screws, respectively, and an annular gearelement meshed with said gear wheels and turning on an axis coincidentwith the centers of the discharge and receiving openings in saidcasings.

- 14. In conveying apparatus, the combination of a casing, one end ofwhich is formed with a depending neck portion for discharge of thematerial, a casing below said first named casing one end of which isformed with an upstanding neck portion, means for connecting said neckportions with capacity for angular adjustment between said casings,conveying screws in said casings, respectively, gear wheels on saidscrews, and an annular gear element surrounding said neck portions ofthe casings and meshed with the gear wheels on the conveyor screws.

l5. In conveying apparatus, the combination of a cylindrical casing, oneend of which is formed with a depending neck portion having a flange, acasing below said rst named casing, one end of which is formed with anupstanding iianged neck portion, said anges being formed with centeringshoulders and arcuate slots, bolts which pass through said slots forsecuring said casings together with capacity for angular adjustment,conveying screws in said casings, respectively, provided at oppositeends with bevel gea-rs, a bushing surrounding the neck portions of saidcasings, and a gear elementl turning on said bushing having two sets ofbevel gear teeth for meshing with the aforesaid bevel gears,respectively.

ALBERT H. BRUNNER.

